Merge branch 'feature-elinuxProgrammableGL' of github.com:tgfrerer/openFrameworks into feature-elinuxProgrammableGL

Conflicts:
	libs/openFrameworks/gl/ofProgrammableGLRenderer.cpp
Merge pull request #9 from tgfrerer/feature-elinuxProgrammableGL

fix minor shader related catches
ofProgrammableRenderer: add isVFlipped back
ofProgrammable renderer: orientation stack on push/popView
ofPrgrammableRenderer/ofCamera: manage handedness correctly
ofEasyCam: fix movement for flipped camera
ofFbo: fix orientation
OS X specific adaptions for oF GLFW

includes libglfw and glfw3 headers in CoreOF, adds ofAppGLFWWindow to project so that it gets compiled & linked properly.

Signed-off-by: tgfrerer <tim@poniesandlight.co.uk>